Main Switchboard
critical
IMO Required
22 models total
Primary electrical distribution board fed by main and auxiliary generators.
5 yr
Class Survey
30 yr
Typical Lifetime
Typical Manufacturers
ABB
Siemens
Schneider Electric
Hyundai
6 manufacturers · 22 models
ABB Marine
10
ABB Onboard DC Grid Power Distribution System
Model Number
Onboard DC Grid
ABB Marine Low-Voltage Switchboard
Model Number
MNS-Marine
ABB UniGear Marine Medium-Voltage Switchboard
Model Number
UniGear ZS1 Marine
ABB Marine Energy Storage System
Model Number
Marine ESS
ABB Shore Connection System
Model Number
Shore-to-Ship Connection (SSC)
Shore-to-Ship Connection (SSC)
Standard
IEC/ISO/IEEE 80005-1
Voltage Shore Side
6.6 / 11 kV
Frequency Conversion
Yes (50 / 60 Hz)
Power Range
Up to 20 MVA
Reference Ports
Gothenburg, Hamburg, Long Beach, Yokohama
Onboard DC Grid
Bus Voltage
1000 V DC
Power Rating per Bus
Up to 20 MW
Footprint Reduction vs AC
20 %
Part-Load Fuel Savings
Up to 27 %
DP Response
Faster than AC system
Approvals
DNV, LR, ABS, BV
First Reference Vessel
PSV Dina Star (2013)
MNS-Marine
System Voltage
400 - 690 V AC
Frequency
50 / 60 Hz
Rated Current
Up to 6300 A
Short-Circuit Withstand
65 kA / 0.3 s
Protection Class
IP54
Construction
Modular MNS withdrawable
Type Approval
DNV, LR, ABS, BV, RINA, NK, KR, CCS
UniGear ZS1 Marine
System Voltage
6.6 - 12 kV
Rated Current
Up to 4000 A
Circuit Breaker
VD4 vacuum, withdrawable
Internal Arc
IAC AFLR 50 kA / 1 s
Common Applications
Cruise, LNG, FPSO, DP3 drillship
Marine ESS
Chemistry
Li-ion NMC (modular)
Energy Range
0.2 - 10 MWh
Functions
Spinning reserve, peak shave, harbour mode
Connection
DC bus via DC/DC converter
Type Approval
DNV, LR, ABS
Cooling
Liquid
Kongsberg
4
Kongsberg Low Voltage Switchgear
Model Number
Low Voltage Switchgear
Kongsberg Advanced Segment Protection
Model Number
Advanced Segment Protection
Kongsberg AC Switchgear
Model Number
Ac Switchgear
Kongsberg High Voltage Switchgear
Model Number
High Voltage Switchgear
ABB
2Kongsberg Maritime
2
Low Voltage Switchgear
Advanced Segment Protection
Advanced Segment Protection Design
Harmonics and inrush considerations